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| Yang,Gang; Chang,Juan; Yin,Qingqiang; Wang,Erzhu; Zhu,Qun; Wang,Ping; Dang,Xiaowei; Lu,Fushan. |
| Four kinds of neutral and alkaline protease genes from Aspergillus oryzae and Bacillus subtilis were isolated and shuffled. The shuffled genes were selected, inserted into pGAPZαA plasmid and transformed into Escherichia coli. The gene which could express high-activity protease was selected by screening the sizes of transparent zones around the colonies on casein plates. After an ideal protease gene was selected, it was sequenced and then transformed into Pichia pastoris X33. The result showed that the base in 1022th position of shuffled protease gene was changed from thymine to cytosine, inferring that cysteine was changed to arginine in the mutant protease. After 48 h incubation for the transformed P. pastoris with the mutant or native protease genes,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Protease gene; DNA shuffling; Pichia pastoris; Gene expression; Protease characterization. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000300337 |
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| Shen,Bo; Zhu,Qun; Zheng,Ma-Qing; Chen,Jia; Shi,Mei-Qi; Feng,Ji-Feng. |
| Polymorphisms in the nicotinic acetylcholine receptor subunit CHRNA5 gene have been associated with lung cancer positive susceptibility in European and American populations. In the present hospital-based, case-control study, we determined whether polymorphism in rs503464 of CHRNA5 is associated with lung cancer risk in Chinese individuals. A single nucleotide polymorphism in CHRNA5 rs503464, c.-166T>A (hereafter T>A), was identified using TaqMan-MGB probes with sequencing via PCR in 600 lung cancer cases and 600 healthy individuals. Genotype frequencies for rs503464 (T>A) were in Hardy-Weinberg equilibrium for the control population. However, genotype frequencies were significantly different between cases and controls (P < 0.05), while allele... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lung cancer; Nicotinic acetylcholine receptors; CHRNA5 gene; Single nucleotide polymorphisms. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100079 |
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